JPS5490518A - Control circuit for dc motor - Google Patents
Control circuit for dc motorInfo
- Publication number
- JPS5490518A JPS5490518A JP15837677A JP15837677A JPS5490518A JP S5490518 A JPS5490518 A JP S5490518A JP 15837677 A JP15837677 A JP 15837677A JP 15837677 A JP15837677 A JP 15837677A JP S5490518 A JPS5490518 A JP S5490518A
- Authority
- JP
- Japan
- Prior art keywords
- motor
- active filter
- control circuit
- phase comparator
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To make a circuit construction simplified, by means of directly driving the DC motor through an active filter.
CONSTITUTION: To an output of active filter 16 is connected a DC motor 17. A phase comparator 14 makes a comparison of the phase between a rotational speed signal of the DC motor 17, outputted from a tachometer generator 18, and an output signal of a reference frequency generator 12. An output signal of the phase comparator 14 is converted into analog signal by a charge pump 15, being fed to the DC motor 17 through the active filter 16.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15837677A JPS5490518A (en) | 1977-12-28 | 1977-12-28 | Control circuit for dc motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15837677A JPS5490518A (en) | 1977-12-28 | 1977-12-28 | Control circuit for dc motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5490518A true JPS5490518A (en) | 1979-07-18 |
Family
ID=15670342
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15837677A Pending JPS5490518A (en) | 1977-12-28 | 1977-12-28 | Control circuit for dc motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5490518A (en) |
-
1977
- 1977-12-28 JP JP15837677A patent/JPS5490518A/en active Pending
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